Typewriting machine



Feb. 5, 1929.

H. A. AVERY` ET AL TYPEWRITING MACHINE Filed NOv. 13. 1926 5Sheets-Sheet l dderma ATTORNEYS Feb. 5, 1929.

H. A. AVERY Ef AL TYPEWRITING MACHINE 5 Sheets-Sheet 2 Filed Nov. 13,Y1926 Feb. 5, 1929.

H. A. AVERY ET AL TYPEWHITING MACHINE Filed- Nov'. 1:5, 1926Sheets-Sheet 5 lNvE'NToRs ATTORNEYS with Yadjustable stop screws overliethe space between traine walls ll and 13, and the guide members 29extend down between said walls between cooperating guide members 31 heldto the main 'trame side walls in upwardly and rearwardly inclinedposition, members 29 and 3l being` provided with races and 32 in whichare confined suitable ball bearings, said members and races being soarranged as to guide the platen carriage and shift traine to shiftyobliquely in a plane parallel with the plane ot wall 13 and the planeot the segment.

As in theCorona Four machine. and as shown in said co-pendingapplication, the shitt 'traine is actuated by either ot two shilft keylevers 33 having' -iforked rear ends einbracing studs on the iorwardends of the side arms' ot a shift torsion and counter-4 balancingtraine. rthis latter traine comprises said torwardly and upwardly extendingarms 35 and a roclr shu'l't 3G Jto-which said arms are held saidshaft being journalled on the side walls l2 ot the main trame betweenback wall ll the lower part ot the shift trame. rPhe studs 34 Vareengaged in rearwardly and downwardly extending slots 37 in guide members29 ot the shitt traine. rllho shift levers 33 are tulcruinedintermediate their ends on transverse pivot screws 38 held to brackets39 secured to the side walls l2 ot *the traine, whiehbrackets alsosupport a rest l() for the headset the type bars. Downward inoveinent otthe shift trame is limited by engagement otl stops ll on guide members29 A2( on brackets 43 held to the main traine side walls.Upwardmovenient-ot the shi'tt trame is limited by the engagement oitadjust-able stop screws lil on members -.9 with stops llo on brackets4:3.

.The foregoing parts are all constructed as shown in said izo-pending'application and as embodied in said 'Coro allein machine.

ln the modified co; `truction ot machine wn in the pres t appli 'ion the'traine 3G is arranged to counter Y, the shi'tt moby couno zine' lngrslo on r with the lower ends of counterbalancing seri il? which aresecured at their upper ends to ol brackets 43. ln addition to the uneand platen, there are mounted traine carriapefteedinp; means, n' means(including` bichroine arms i8 platen carri on the sl in. ribbon vibra tishit't and stencil control) ribbon i'eeding means, and ribbon 'leedreversing means, all operable trom the keyboard of the machine. Novelmeans provided on the main vtraine et the machine 'tor avctuat' thecarriage (feeding, ribbon vibrating', `ribbon Viteeding,

and ribbon reversing means on the shift traine troni the kevboardin allcase positions ot the platen carriage, and comprising; provisions fioractuating` all ot said means on the shift Y traine from the character`andlor actuating the carriage :teedir keys through the meclnirnv orl atype-bar-actu ated universal bar, means A b ar.

'trom the space bar independently ot actuation of the ui'iiversal barand the ribbon vibrating, ribbon feeding and ribbon reversing means.l y

rl`he arcuate'sheet metal universal. bar 49 is located between thesegment le and the partition wall 13 and is supported in a planeparallel with the planes oit said wall and segment to vibrate in therecess 'l5 in the segn'ient'in a path substantially perpendicular to theplanes oiC said wall and segment and the rearwardly inclined plane inwhich the type bar pivot wire 16 in the segment lies Universal bar l) iscarried at the forward ends oi? a pair ot two-part sheet met-al sidearms comprising front sections and 5l and rear sections 50a and 5l, saidside arms extending' downward and rearward from the universal rilhesections 50 and 5l are preferably 'formed integrally with the' universalbar, as showna aud extend through pairs ot registering apertures 52 and'formed1 respectively, in wall 13 and :tulcruin plate 2l, as shown inFigs. 2 and 5. Thetront portions ot sections 50a and 5la are ri fidlybut detachably clamped vto the right hand side faces ot the rear por#tions of sections 50 and 5l, in rear ot wall 13 and plate 2l, by pairsof clamping screws 54: threaded into sections 50 and 5l.

Sections 50iL and 5la ot the side arms are preferably both offsetlaterally inward at the rear ends of sections 50 and 5l, as shown, andare provided with longitudinal guiding' and supporting` slots 50b and51b in their offset rear portions extending perpendicular to the planesfofl walll?) and the segment. These slots'are open at their rear endsand correspond in width with the diameter of rock shaft; 36 whichentends therethrough and upon which the side arms are thus slidablyvsupported and guided at their rear encs to reciprocate tore-and-a'it otthe machine. A transverse bridge or spacer bar 55 formed integrally withsection 50a forward ot shaft 36 abuts thevinner tace ont section 51u.

rl`he side arms extendrearwardy and down.'- wardly through the shifttraine and the shitt torsion and counteroalanciiig;` traine, betweenguide members 29 and rock arms 35, and above brace rod 30 and below theca riage bed 28, to a point adjacent traine wall ll and the base line otthe main trame and are supported and guided intermediate the universalbar and shaft 86 on tore-and-at't rockingl supporting); arms 5G and 57.Rocker arms 56 and 57 are preferably formed of sheet steel and arebrazed'or welded at their lower ends on the hub portions ot a shorttransverse rochr shatt 58 preferably formed ot steel and having itsreduced hub portions or trunnions 58? journalled on the inner ends ,othorizontal 'bearing' screws 59 threaded inward through sie llO

yits ends which are journal slightly less angle. from the vertical thanthe wall 13 and shift traine and have pivot holes 1n their upper ends inwhich are engaged the reduced inner ends of pivot studs 61, the reducedouter ends ci' the studs being swaged in apertures in theuniversal-bar-carrying arm sections and 51, respectively, forward ofside sections 50L and'51a.

Forward movement of the universal bar is limited by engavgenientof saidbar with the front wall of recess 15 in the type bar segment 14, andrearward movement et the universal bar is limited by engagement of anadjustable overthrow preventing stop (S2-G3 with rock shaft 36. Thisstop comprises a ore-and att bendable integral finger 62 on side armsection 51, depending from the top. wall of slot 51b in said section,and having a rubber cushioning sleeve 63 trictionally held thereon. Stop(S2-G8 is adjusted to engage shaft 3G only after a full printingmovement et' a type bar, the type bars being provided adjacent' theirpivots with lugs 17 for engaging the .front edge of the universal barand moving it rearward, and being also preferably pro'-y vided with lugs17" for engaging an anvil tace 14 on segment le.

The universal bar is normally held at the forward limit of its movementby a return spring, hereinafter described, and its extent of throw andthe throw of rock arms 56 and 57 are such that the pivot studs 61 swingbetween points substantially equal distances at opposite sides of aplane through the axis of rock shaft 58 perpendicular to the plane ot'the Carriage bed and parallel with wall 13, as will be apparent fromFigs 1 and 2. The

described arrangement and movement of roel;

arms 56 and 57, together with the arrangement of slots 50b and 511longitudinally of the side arnis and perpendicular to the plane of wall13, provides for supporting and guiding the universal bar 49 to vibrateobliquely to the horizontal plane ot the machine in a path substantiallyperpendicular to the plane ot the segment and its type bar pivot wire.

The ribbon vibratin(y "'lion 'z; l' and ribbon rever the all traine areall operat )i ioni a single tf,

L L ing rotfl: ^l t This und et erably to` et the inaChine an reducedbearing I 66@ cfa pair of instal brac rlhe brach-ets e5 and 66 aredetachelil nions et shaft 64C, which `"the Serena Fear n'iachi'ne.

screwed?, andthe arins 659 and ttL lie iiatwise in vertical planesextending foreaiidatt of the niachineand curve downwardly andrearwardljY topoints closely under the Y 13 where they are pro-4 loweredge oi wall vided with h aring es ior the trunthus supported closelyadjacent and under the edge oli' wall 13 above the character key leversandbelow the shift key levers to oscillate about a horizontal axis. Asheet metal roch erin ($8 extends downwardly, and preterably sl glitlyierwardly, from rock shaft @il at'a point inten mediate the ends ofsaidslialt andsubstantially in the fore and aft vertical pls' Le of sidearm 51-51 of the universal bar. This roel; arm is brazed or welded onshaft ee and tends down between adjacent hey levers el the machine to apoint below the he] levers 'and close to the base line of the main i:,ii-nie, and is connected at its lower end with the forward end ofore-and-a Yt extendingand subst tially horizontal rigid wire Ylink 'lnel its rear end with the lower end oran' arm 70 jllorn'ied integrallywith side arin section 51a and ezztendin'g downward and pi'veflrablyslightly forward from the orward'end o1' said section to a pointb'elow'rook shalt 58 and bet een said shalt and the shitttraine bracerod 30. ,i i f A pair otsheet metal tappe't ar'ins .l are brazedorwelded on the trunnions ell of sh att (Sil and extend forwardly tronisaid shaft an d then upwardly and rearwardly direct v in iront ot wall18, said arms being Jiorined with integral hook-like tappets 72 theirupper ends disposed tiatwise iii a substantially horizontal plane andhaving rearvfardly lacing ahutn'ients or Contact 'edges 72" t1 ei'e'onextendinginward t ansverse'ly of the machine.

The universal bar i9 and tappet shaft efiare preferably bothreturned orrestored'to norinal position hy rneans common to both there- To thisend, at least oi'iejadditional delixendingvroclr arin 73 is tixe'dlyheld to saidv shalt. As shown, a single' rock arm '73, preterably'i-'orlned integrally with the lett hand' tappet arm 71, is provided,saidroch: arm eX- downward below the level ot the key traine wall 13 andsupport bar 75 below the key levers and forward ot the upturned rear endportions ofv said `key levers.V lil'eturn springs connected at theirforward to'bar 75 and at their rear ends to the l( *l levers, as Yinthird sheet l io 7'? for the characterrlrey levers arey segment lll.

motel tappet arm T8 is brazed or welded on rock shaft (Sii and liesflatwise in a vertical plane located between the left hand tappet arm 7land the left hsnd end of the type bar rlhis tappet Z8 er* nds upward andforward from shaft 64, and the outer end of a horizontally andtivensversely extending tappet screw 79 is threaded into the forward end4of seid erin. it will be obvious that sgringg Tel will normally holdthe universal bar, and the three tappet arms and tappets held to snaft6s, in the positibns thereof shown in the drawings. l

The particular ribbon spool rotatingmeans and the means for reversingthe direction o feed of the ribbon, mounted on the shif frame, are notloir-red per se in this appliestion. The novel operating mechanism, forthe spool rotating` means and the ribbon feer reversing ineens,disclosed and claimed herein, is particularly adapted for use inconnection with the spool rol'r-iti'iig and feed reversing means shown,but moy be employed to actuate other forms of spool rotating andreversing' means. The ribbon feeding and reversing devices shown ereconstructed and operate, and are supported from the shift frame, as morefully shown and described in the cri-pending application of lilly andHarmon, hereinbefore referred to, and es in the Corona our machine, andwill be only briefly described herein.

The ribbon spools 80 are held to the splitA `or slotted upper ends ofhubs 8l of spool rotating ratchet wheels 82 to rot-ate therewith, saidratchet hubs being` journalled on reduced upper portions of verticalposts 83 fixed on a. pair of sheet i etal brackets S41. The brackets Sliare secured by screws at. their rear end to the bottoni face of thecarries-e bed 28 and extend forward over frame rivali 13, suplwrtingthespools substantially level vith the platen at opposite sides of thesystem lof type bars. rlhe spools src housed in cups S6 ettached to thebrackets7 ond the bichrorgie ribbon 87, wound on and attached to thebarrels of the spools, passes through openings 88 in the cups across thefront of Vthe platen.

The ratchets are adapted to be rotated liv pawls 89 loosely pivotedintermediate tiroir ends on transversely and horizontally extending'pivot screws 90 threaded in eers 9i depending from brackets 8d. Springsl00 confnecting the pawls (above their pivots) with 'the brackets,normally tend to tilt the pawls laterally'on their pivot screws pull theupper or nose ends ofthe bowls outwardly into the toothed edges oftheHorizontally swingine,` detent pewls 92 pivoted onthe brac iets at 93here their noses norinally'unged to the toothed edgesV of the ratehetsby lsprings 94T conn-ecting` the said pawls with brackets 8%. Cams onthe forward arms of horizontally swinging feed remoose? tending upwardend forward from the tappety arms to the pawls in such manner that theforward end of each link swings between points located substantiallyequal distances below and above a plane through the point ofconnectionof the link with the associated tappet arm perpendicular' to the planeof shift of the shift freine, when the shift frame is shifted from onese position to the other, so that the pawls will be given subs 'antiallyequal swinging movements in both case positions whenV shaft 04risoscilleted. rlh-e arrangement of the pawls and ratchets and-the noveloperating mechanism thereforl is such that the spools are turned inopposite directions by the pawls, end the active or winding spool isrotated by its pawl on the return stroke of the universal bar 49.

lThe interconnected cams 95 for reversing the feed of the ribbon aresin'iultaneously shifted in opposite directions by first one and teenthe other of the tappets 72 through the medium of a pair ofribbon-controlled connecting devices carried by the cams. Each of thesede icc-,s comprises an upstandingg sheet metal lever 101 pivoterintern'iediate its ends to swing transversely of the machine on a pivotscrew E02 carried by an ear 103 depending from the adjacent cam 95. Aweight 101i on eech lever 101 norn'ially holds tl e lever u rightagainst a stop lung. 105 on car 103 with the lower erm of the lever outof the path of movement of the adjacent tappct- 'T il Awire ribbon guideloop 106 carried by the 2 i i. ripper zum oi each lever lOl is adaptedto bc engaged by one of the ordinary reversing iaitinents or metaleyelets (not shown), ce ried by the ribbon Si' near its opposite ends, orock the lever 10i (associated with the pool from which the ribbon hasbeen exhausted) to swing the lower erin of said lever utwerd into thepath of movement of the fle-e portion 72 of the adjacent tappct 72. lfon return movement of the tappet (folving setting; the connecting leverinto tive position) the tappet will push rearward on the lower arm ofthe lever and carry it bodiy reorward, thereby rocking; the adjacent com9.3 rearward to permit the feed and detent pawl associated with theadjacent ratchet to become effective on the adjacent Wil lll?

spool to rewind the ribbon thereon, the cam l associatedV with the fullspool being at the same time rocked forward to throw ont lil feed anddetent pawls associated therewith and hold them outof effective actionon the and cooperating with a linger 19,8 on right hand lever yieldablyholds the cams 95 in their shifted positions. 1n order that *tappets 72may impart uniform bodily rearward movement to connector levers 101 inboth oase positions of the obliqnely shiftable shift frame, the lowerarms of said levers are stepped to provide contactfaces 191" and 1911iadapted to be engaged bytappet edges 2n in lower and ripper caseposition-s, respectively, of the shift fra-nie. Tie face 191" islocate-:1` forward of the face 101a a distance correspondii'iig,` withthe 'extent of bodilyrea r- 'w rd movement of the lever 101 dueI to theup- ;rd and rearward movement ofthe shift mie from lower to upper case.:v

The ribbon vibrating means carried by the shift frame is operated by thetappet screw 79 on the tappet arm-"Z8 held to rock shaft A64. Thisvibrating means is preferably con.-l

structed and a'ranged, and is operated by said tappet, in the mannermore' fully shown and described in our application for pate; Seria-lINo. 148,254, filed `iil-'ovember 13, 1926i, but the said tappet maybeemployed tev operateother forms of ribbon vibrating means.

A sheet meta-lbracket 109, held by serews to the bottom face of thecarriage bed 28 adjacent the left hand spool bracket 841, extend-sforwardly over wall 13 and is provided at its front edge withI an-`upstandflngr arm 1-11lying latwise in a planeparallel' with said wall, Aribbon gni-de1 supportingA and vibrating' lever 112 extends transver "yof the machine in front of said braclne arm and pivotally held to saidarm intermediate its ends by a pivot screw 113 to rock up and down in aplane parallel with wall ribbon guide 114- lies behind a typo bar guide115 which-'is held by screws, as shown, to the front facel of wall: 13above theV central portion ofthe segment and eX- tends upward andrearward in of the platen parallel with said wall: The ribbon y 87 isadapted to be threaded through said ribbon guide 114e, which isconstructed, and slidably guided on the type' guide 115A4 by fingers 116to vibrate in a plane parallel with.

the path of case shift movement of the platen, as in the Corona Fourmachine an in said co-pendingapplication of Ely and: Harmon,hereinbefore referred to. 'Ehe inner end of lever 112 lies behind thelribbon Vguide and is provided with a horizont-.al slot 117 Vin'wliichisenpaged the shank' of a headed stud 118 carried by tl-,ie'ribbonguide Alvibrator1191forlever 1212 entends downf end: on. screw 79, havin-r alongitudinal mido 1versely extending kward and forward from vthe outerarm of the lever to the actuatingl tappet 78 forward of wall .13 and atthe left hand. side of `the segment and the system' of type ybarspivotedr inthe segment. The vibrator is reciproca'ble endwi'se in arearwardly inclined path, being movable upward V(and normally heldelevated) by a supporting and-return spring 120 and beingl movabledownward by tappet screw 7 9 which has a down push connection with atappet toe 121 pivoted on the vibrator at 121a to swing'fore and aftofthe machine. p

Spring 120 is connected with bracket 19.9 and tappet toe 121 in suchmanner as to normally hold the vibrator 119 elevated and normally holdthe toe 121 rocked rearwardto maintain an abutment 122 thereon en-fgagged' under tappe-t lscrew 79. A fore-and# aft swinging cam lever 145pivoted on'bi'acket 109 at 1116 has its lower end extended in.- wardbehind toe 121 vandis adapted to swing toe 121 forward about its pivotat the beginning of an upper Case movement of shift frame to disengageabutment 1:22 fro f under tappetscrew Z9 and permit ment of a secondIand lower'abntment 123 on the toe nnderv saidv .screw at the end of anupperV case movement ofthe'shift frame. Cani. lever 115 isv rockedforwardrabont its pivot 146 uponl minute lift of the sl frame by a canishoulder 14157 on. a supportgagged with the upper end portion of saidcam Shoulder. rbntments 1:22. and constitiite the` lower edges of thebranches of 4an inverte l L-sl11aned slot in the ktoe 121 the upperedges of which branches are held vout of Contact with screw 7 9 byspring. 120. The vibrator 119 is guided a= its lower .si-ot 1241-theiein thronpfh whichvthe shanko salud rew extends. and which issfogairanged that the ends thereof arenot engageable byV said .screwshank at any time. .lhe vibrator is gni/led adyacertl its upper'end bytransat 129 on bracket `a m 111 andlis pivotalllly held tothe'vibratorat 12T.. i ,Y

A transversely swinging `spring` steel con# nector arm 128 is pivoted at129 on the vibra@ tor and extendsnpward through ayol'ie' "130 formed onthe vibrator.` Thisv arm is'prolvided a-tits upper. end with a fingerpiece 131 whereby it may be adjusted transversely by flexing rearward:-an-d swinagingv it about its pivot 129 to position the shank of a headedstud 1132, carried by thev arm, in either end portion of a longitudinalslot'l (formed in the'outer arm of lever 112)-, or in.y register with aconnected slot formed infsaid lever armi and extending "upward from thelower nl; which is pivoted edge of the lever to the middle portion oislot 133. p

A stop 135 on the vibrator cooperates with a Vcam edge 136 on yoke 130to hold the connector with stud 132 in the lett hand end oi slot 1331011effecting a short throw oi' the ribbon guide for writing in black. Astop 137 on the vibrator cooperates with a cam lever 112V and bracketarm 111 limit upward movement of the vibrator and downward movement ofthe ribbon guide, which guide normally holds the ribbon lowered touncover the printing point on the upper front quarter of the platendesignated by the arrow 1). A stop 142 on the vibrator is adapted toengage the upper face of bracket 109 to limit down throw of thevibrator. Cooperating stops 143 and 144 on the lever 112 and bracket arm111 are adapted to engageA only when the .device is adjusted for writingin redythese stops being` employed to prevent overthrow k01." the ribbonguide due to ino-mentum acquired during' the long' throw of the guide inwriting in red. The outer arm of lever 112 is guided between fingers 109on bracket 109.

It will be obvious that the ribbon guide will be moved upward by tappet7 9 on the printing' strokes of the type bars to cover the printingpoint if the connector 126 is adjust-ed for printing through either haltor color zone of the bichrome ribbon7 and that the guide will bereturned to uncover the printing' point by spring' 120. 1t will also beobvious that the guide will remain stationary in lowered position duringthe type bar strokes when the connector is udiusted to stencilingposition. As abutments 122 and 123 on tappet toe 121 are .steppedlongitudinally of the toe a distance corresponding with the extent ofcase shift movement ot the shift frame, it will be obvious that tappet79 will depress the vibrator 119 equal distances in both case positionsof the shift trame.

The carriage feeding' mechanism is'also mounted to partake of the caseshift movements of the Aplaten carriage. rlli-e carriage feeding meansshown comprises a` rotary escapement constructed `and operating as morefully'shown and described in our application for patent, SerialNo.148,257, tiled November 13, 1926. y

As the operating means for the escapement mechanism may be employed toactuate other forms of escapement mechanism,

.the wheel.

only so much of the escapeinent heroin sh own as is necessary to a clearunderstanding of.

nalled in the bracket 150 to rotateabout an axis perpendicular to thecarriage-bed. pinion 159 liked on the upper end of shaft 158, whichextends through the bed, meshes with a rack 160 secured to the carriage.The carriage is normally urgedto tliefleft, as usual, by a .spring drumand draw band (not shown) which may be arranged as in the Corona Fourmachine. A return spring 161,- connectinO' a lug 162 on the right handpivot ear 153 or' the dog' rocker with the vbracket 150, normally holdsthe dog rocker in the position shown in the. drawings with the lineddog' above the plane of esca-pement wheel 157 and the loose dog' engagedwith the whe-el. A stop arm 163 extending' forward from the left handpivot ear 153 of the dog rocker normally engages under bracket 150 tolimit return movement of the dog rocker.

r1`he left hand pivot ear 153 of the dog' rocker is formed with a`downwardly and. forwardly extending' arm 164. This arm eX- tends downoutside of the inwardly ol'lqset slotted rear portion of side armsection 50L of the universal bar vsupporting means and is provided witha lug' 165 at its lower end extending' outward-beyond the rear end ofside arm section 50 and lying tlatwise in a plane perpendicular to thewall 13 and the path oi? movement ot' the shift traino.

A tap pet or shoe 166, formed on the roar end olr side arm section 50and projecting' rearward beyond the rear ond of the outwardly otl'set'forward portion of side arm section 50a., is adapted to engage theforward edge ot lug' 165 and push rearwardly Vand downwardlythereagainst on the printing' strokes of the type bars to rock the dogrocker to carry the loose dog down out oi' co-operative engagement withescapement wheel 157 and the fixed dog' into co-operative engagementwith The rear contact edge or tappet 166 inclines upward and rearwardparallel with the plane of shift of' the carriage and dog rocker, and itwill be obvious that the dog rocker will be rocked uniformly in bothcase positions of the platen carriage.

1t will be evident that whenever a character key is actuated theuniversal bar 49 will be actuated., and that actuation ot the universalbar causes actuation of the escapernent mechanism and the ribbonvibrating and eeding mechanisms, except, of course, that' the ribbonguide will remain quiescent when the controller 128 is adjusted torstenciling.

.lt is desirable that the escapement ine-chia' nism may be actuated fromthe space bar without causing an operation of the ribbon .mechanisiir l'lo thisV end novel means has been provided for actuating the dog rockerl from the'space bar without actuating the uni- ,"ixed on a transverserock shatt 169 having trunnions 170 at its ends journalled in torwardlyYextending ears 171 punched up from ie key lever guide comb 22. A rockarm 72 fixed on said sha-tt extends downward and forward in front oithe'comb and is pivot-k ally connected at its lower end by a transversepivot screw 173 with the forward endv of a fore-#and-aft extending andendwise reciprocable tappet bar 174.

Tappet bar 174 extendsV V rearwardly throufh a guide slot 175 in comb 22and under su -lever segment 24 and the type-bar segment 14, and alsounder rock shaft 6f1 and wall 13, and over anchor bar 7 5. Bar 1711isbent upward behind wall 13 forward of shaft 58 and then extends rearwardand downward along the outer side of side arm section oi the universalbar supporting means over rod 80. This inclined rear poi-tion ot the baris formed with a guide slot 176 extending substantially perpendicular towall 13 which Y is engaged the reduced shank portion 177 a of ahorizontal supporting and guiding stud 177 carried by and extendingoutward from theY universal bar supporting and guiding rock arm 56 onrock shaft 58. A tappet or shoe 1.78, formed on the rear end of bar 1711alongside tappet 166, has its rear Contact edge parallel with the pathof shift of the platen cari'iage and dog rocker and arranged to push i ybar is limited by stop lugs 181 on the 'spaceroeker arm 1641-.

Bar 174 and the space bar are returned and rearwardlv on the Contact lug165 on the dog yicldably held in the position shown'in the drawings by areturn spring 17 9 connected at its rear end with the bar 174 and at itsfon ward end with the anchor bar 75. An up- 'standing stop lug 180formed .on bar 17e enf the rear taceoi guide comb 22 to limitreturnrmovement oi the space bar 167 and tappet bar 174. -Down throw/of thespace bar and rearward movement ot the tappet bar-supporting armsengaging theV upper ends of the two forward rubber supportingiteet 182attached tothe main trame, this stop arrangement for limiting the downthrow otj the space bar being the same as that embodied in the CoronaFour machine.

YV ith the described arrangement for operating the dog 'rocker from theuniversal bar f and space bar, tapoet bar 1741 (while supportmeans)operable without moving the universi bar, and the Vuniversal bar isoperable tappet bar 174. The rock arms 172 and v56and stud 177 supportwithout actuating the and guide` tappet bar 174 that its tappet carryingend movesv rearward and dowifn ward, when the space bar is depressed.,with .the con-tact edge of tappet 178 always substantially parallel withwall 13 the pivot 178 moving rearward and downward and slot 176` being.inclined rearward and downward. Tappet 166 is preferably arrangedslightly torward ot tappet 78, which latter VVtappet preferably normallyengages Contact lug 165 on the dog rocker, so that the dog rocker may beactuated by a short dip of the space bar,

so that the ribbon vibrator will be moved throughout the movement of theA.univereal bar to insureV proper actionoftthe vibrator,

and so-tliat the dog rocker vwill be rocked from and'will return tonormal position, respectively, during a minimum4 part ot the printingstroleand a minimum initial part of the return stroke of a typebar, -ti

ing' rapid writing.

lt will be observed simple and sturdy construction, consists oi? aminimum number of parts, and is arranged to .permit actuation oi theescapemen't inde-v ius in-A suring proper action of tliefescapementfdur-v that theA escap'emen-t,` ribbon vibrating, ribbon feeding andribbonI Vreversing means, and the means torv operati-ng the same, arearranged in a man-ner permit-v u The operating mechanism is convenientlyaccessibley and of pendently ot the ribbon .trein the space bar.y

rlhe sectional construction oi the universal bar and theuniversal-barcarrying mea-iis, to-y gether with the detachableinounting'of the.

segment, provides `t'or a sturdy and accu- 'rately guided uni-versal barandv supportingineans therei'or'whioh may be convenientlyA ilrel machinein compact relation with the shift frame.l V'Theuniversal bar supportingandguiding means is simple and compact, and the space bar mechanismconsists ofA a minimum number of parts. v

lt willv be further observed that the escapement mechanism is operablefrom one side arm ot' the universal bar and the ribbon mechanism isoperable from the other side arm ot the universal bar, so that the loadon the universal bar supporting means is sodistributed as to reduce to`a minimum the li'aassembled in a low three-quart ,if-.st

bility vof objectionable vca-nting of the universal bar, andto reducestrain and? lirictions with the universal bar.

tional resistance in the universal bar mechanism to a minimun'i.

lt will also be noted taat the ribbon operating mechanism on the mainframe is con'ipactly arranged With relation to the main frame and theuniversal bar, the tappet shaft underlying Wall 13 and the universalbar, and A the tappet arms l2 being-located at opposite ends of theuniversal bar and segment. The ribbon feeding` means and ribbonreversing; means are compactly arranged forward of the plane of Wall 13and forward of the shift frame, and are supported from the shift frameand both operable from the tappet arms 72. Tappet arms 72 and tappet arm78 are all held to shaft till, the ribbon vibrating means beingconnected with arm 'lf3 and extending up therefrom around one end of thesegment to the ribbon guide Which is mounted on the type guide. Theribbon vibrating means, including the biohreme shift and stencilingcontrol means, is mounted on the shift frame forward of the plane ofWall 13 and is conveniently accessible, The rib-l bon feeding andreversing),l devices are also conveniently accessible. The escapementmechanism is shift-able With the carriage and located in rear of theplane'of Wall 13, and, as before described, is operable from one sidearm of the universalbar, While the ribbon mechanism operable from theother side arm of the universal bar and located forward of the plane 'ofWall 13, thus avoiding` objectionable interweaving,l or crowding ofparts of these mechanisms and their operating connec-l It will also benotedthat the escapement mechanism is located to the rear of the typeaction and does not extend into the supporting and carrying` means forthe universal bar.

rl`he escai'iement mechanism, ribbon vibrating mechanism, ribbon feedingmechanism, and ribbon reversing' mechanism are all operated from asingle type-bar-actuated universall bar. The ribbon spools are rotatedby the feed devices, and the ribbon reversing mechanism (whenautomatically rendered active) is actuated, on the return stroke of theuniversal bar, thus contributingl to easy action of the machine. Thepeculiar manner of supporting the universal-bar-carryingg means iseilicient and contributes to reduction in the number of parts in themachine.

AWhat We claim is:

1. In a typeivriting machine, a platen, a platen carriage, lrey-o}erated type bars, an arcuate Iype-bar-actuated universal bar, means forsupporting and guiding the universal bar to move rearward when struck bya type bar, said means being` located entirely to the'rear of theuniversal bar and including a pair of fore-and-aft extending arms spaceapart transversely of the lmachine and supporting,` the universal bar attheir forward ends, a rock shaft extending transversely of the machineunder the universal bar, a roel: arm dependin` from said shaft, a pairof rock arms extending,I upward from said rock shaft at opposite sidesof the machine and between which the universal bar is located,r ribbonfeedingand reversing means operable 'from said upwardly extending,`roclrarms, ribbon vibrating,` means, an actuator for said vibrat il entmechanism :torthe carriage, means carg ried by one of saiduniversal-bar-supporting arms for actuating;l the escapement mecha-Anism, and means connecting` the otherunivcrsal-barssupp'orting arm withsaid depending' roch arm for rocking said shaft.

2. in a typc\.\iii'ti=.i machine, a platen, a platen carriaegr-i,key-operated i pe a space bar, arcuate type-bar---acinated universalbar, vibratory' means for supporting` and guiding the universal bar tomove rear- Ward When struck by a type bar, a rock shaft ez-d'endine`transversely of the machine, a roel( arm depending.; from sair shaft, alink connection between saidroclt arm and said vibravtoryuniversal-b:1i-supporting means, a pair movement between said secondactuator and said vibratory means.

2l. ln a tvpeivritin,e` machine, a platen, a carriage for the platen, auniversal bar, a vibratory support for said universal bar, anescapenient for the carrieife includ ing-a dos; roc" er, an actuatorconnected to vibrate with said universal bar for actuatingv the dop`rocker, a space bar, a vibratory actuator for the dog roclrer having); apinand-slot supporting and guiding.;` connection with said vibratoryuniversal bar support whereby the actuators may vibrate independently,said dog` rocker being' means held vto said rock shaft, escape-voperable by the space 'bar and' loosely engaged by both actuators, andVkey operated type bars for vibrating the univer sal bar. y

ln a typeivriting machine, a ilaten, means for case-shifting the platenincluding a roch shaftextending transversely of the machine, an arcuateuniversal bar, side arms supporting said universal bar at their for-Ward ends and slidably `guided attheir rear ends on said shaft, andkey-operated type bars for vibrating said universal bar.

5. In a typewritingg,- machine, a platen,

supporting said universal bar at their forward ends and slidably guidedat their rear ends on said shaft, a pair of fore-and-aft swingingrockfarms on which'said side arms are supported intermediate `the rochshaft and-universal bar, lrey-operated type bars for actua-ting saiduniversal bar, and ribbon mechanism and escapementmechanism-operablefrom said universal bar.

7. In a typewriting machine, a platen, means for case-shifting theplaten including a -roclr shaft extending transversely of the machine,an'arcuatefuniversal bar, side arms supporting said 'universal bar attheir for- -Ward ends and Vslidabllv-g ided at their rear ends on saidshaft, a vpair lof fore-and-aft swinging roclr'arms on which said sidearms are-supported intermediate the rock shaft and universal bar,key-operated typebars for actuating said universal bar, escapementmechanism roperable from `onel side arm of ysaid universal bar, andribbon mechanism operable fromthe other side armfo'f said universal bar.

8. `ln a typew-riting machine,a main frame;

a platen carriage;a support for the `carriage shiftable to change case;ribbon vibrating support; a type bai' actuated universal bar; a rockshaft on the main frame; a connection between said rock shaft anduniversal bar for rocking theshaft; a pair of actuators on said rochshaft for operating the ribbon reversing devices and spool rotatingdevices in all case positionslof the shift frame; and an actuator onsaid rroclrshaft for operating the ribbon vibrating means in all easepositions of the shift frame. i v

i). in, a typewriting machine, a main frame, a platen carriage,V anup-and-downmovable shift 'rame supporting the carriage, a transverserock shaftjoiirnalled on the main frame in rear of the shift frame. apair of rock arms extendingforward from said shaft and con-A iiectedwith the shift frame foi moving the ,Y

shift frame up-and down, shift key-operated means for rocking saidshaft, an arcuate univeisal bar forward of the shift frame, hey i d typehars for actiiatA ysaidiinivei opeiii4 saifhaiz a pairof transverselyspaced arms ribbon spool rotating devices, andV n n s ribbonreversingfdevices sliiftable withsaid -frame,r a platen carriage, an`up-andfdown guide slots at'their rearendsithrough which said rockshaftgextends, said'funiversal-bar-` carrying arms -extendingrthroiighthe shift frame and supported andguided on thefrock shaft betweentheroch arms, and fore-andLaftl swinging means mounted'onthe main framebetween the roch shaft anduniversal bar and i pivotally connected withsaid universal-barg carrying arms forward o-f the iroclrshaftforsupporting and guiding said arms;

l0. In a typeivriting machine, a main frame, a platenfcarriage, andupLand-down movable shift framesupportingthe carriage, a transverse rockshaft journalled on .the main frame kin rear of the shift frame, a pairof rock arms extending forward ,from .said shaft and connected with Ltheshift iframe `for moving the shift frame up and down, shift key-operatedmeans forrocking said shaft, an arcuate universal bar forward 'ofthe-,shift frame, key-operated typebars for zactuating said universalbar, a ,pair Lof transversel7 spaced arms carrying lsaid `universal (barat their forward ends and havinglongitudinallv extending guide slots. attheir rear yends through which saidfrock shaftrextends,said universalIbar carrying -arims :extending through the shift frame andsupported andguided on the rock shaft between the :rock arms, vfore-and-aft swingingmeans mounted on the inain frame 'betweenfthe ro'clr shaft and universalbar and lpivotallyconnected withA said universal-bar-carrying armsforward -of the rock sliaftfor supporting and guiding said arms,escapenient mechanismv for thevplaten carriage mounted Ito shift withthe shift frame, and an actuator for asaid escapement mechanism onone-of said universal barcarrying arms. i

` .11. In a typewriting ,-niachine, a main movable shift framesupporting the carriage,

4a .transverse rock lshaft ljournalled on the Vmain frame'inrear of theshift frame, a pair of roch arms extending forivar'dfrom said `theirforward-endsand having longitudinally *extending guide slots at theirrear ends through ywhichsaid rock shaft extends, 'said extendinguniversal #bar carrying arms through the shift. Aframe and supported andguided on Ithe rock shaft betweenthe roch arms', vfore-and-,aft swingingmeans mounted on tliefmain framebetweenfthe-rock shaft and universal barand Lpivotallv,connected With said universaldaar-carryi-ng arms forwardof the rock shaft for' supportingvnnd guidiiig iie ; shaft and connectedwiththe shift frame `for i iso i CTL said arms, ribbonl vibrating meansmounted on the shift frame, an actuator' for said ribbon vibrating meansmounted on the main frame, andY anoperating connection between saidactuator and one of said universal-bar-carrying arms.

12. In a typewriting machine, a main frame, a platen` carriage, anup-and-down "movable shift frame supporting the carriage,

` through which said rock shaft extends, said universal bar carryingarms extending through the shift frame and Asupported and guided on therock shaft between the rock arms, fore-and-aft swinging means mountedVon the main frame between the rock shaft and universal barand pivotallyconnected with said universal-bar-carrying arms forward of the rockshaft for supporting and guiding said arms, a. pair ofribbon-spool-rotating devices supported from the shift frame at 0ppositesides of the machine forward of the shift frame, a second rock shaftextending transversely of the machine forward of the shift frame andliournalled on the main frame, aV

connection between .said second rock shaft and one of theuniversal-bar-carrying arms for rocking saidshaft, and separateoperating Y connections between said second rock shaft and saidspool-rotating devices.

13. In a typewriting machine, a main frame, a platen carriage, anup-anddown movable shift frame supporting the'carriage, a transverserock shaft journalled on thefmain frame in rear of the shift frame, apair of rock arms extending forward from said shaft and connected withthe shift frame for moving the shift frame up and down, shiftkey-operated means for rocking said shaft, an arcuate universal barforward of the shift frame, key-operated type-bars for actuating saiduniversal bar, a pair of transversely spaced arms carrying saiduniversal bar at their foryward ends and having longitudinally extendingguide slots at their rear ends through which said rock shaft extends,said universalba1.'-cairying arms extending through the shift frame andsupported and guided on the rock shaft between the rock arms,fore-andaft swinging means mounted on the main frame between the rockshaft and universal bar and pivotally connected with said uni,-versal-barcarrying arms forward of the Y rock shaft for supporting andguiding said nections between said second rock shaft and saidspool-rotating devices, and mechanism forward of the shift frame andsupported therefromfor rendering the spool-rotating devices effectivealternately and operable alternately from a part of each of saidoperating connections to the spool-rotating devices.

14:. In a typewriting machine, a main frame, a platen carriage, anup-and-down movable shift frame supporting` the carriage, a transverserock shaft journalled on the main frame in rear of the shift frame, apair of rock arms extending forward fromV said shaft and connected withthe shift frame for moving the shift frame up and down, shiftkey-operated means for rocking said shaft, an arcuate universal barforward of theshift frame, key-operated type bars for actuating saiduniversal bar, a pair of transversely spaced arms carrying saiduniversal bar at their forward ends and having longitudinally .extendingguide slots at their rear ends through which said rock shaft extends,said universal-bar-carrying arms extending through the shift frame andsupported and guided on the rock shaft between the rock arms,fore-and-aft swinging means mounted on the main frame between the rockshaftand universal bar and pivotally connected with saiduniversal-bar-carrying arms forward of the rock shaft for supporting andguiding said arms, an arm depending from one of saiduniversal-bar-carrying arms, a second transverse rock shaft journalledon the main frame forward of the shift frame, a rock arm depending fromsaid shaft, a fore-and-aft ex tending link connecting said dependingarms, and ribbon feeding and vibrating devices supported from the shiftframe forwardly of the shift frame and operable from said second rockshaft.

l5. In a typewriting machine, a main frame, a platen carriage, anup-and-down movable shift frame supporting the carriage, a transverserock shaft journalled on the main frame in rear of the .shift frame, apair of rock arms extending forward from said shaft and connected withthe shift frame for movying the shift frame up and down, shiftkeyoperated means for rocking said shaft, an

arcuate universal bar forward of the shift frame, key-operated type barsfor actuating said universal bar, a pair of transversely spaced armscarrying said universal bar at their forward ends and havinglongitudinally extending guide slots at their rear ends 'through whichsaid rock shaft extends, said uniVersaLbar-carrying arms extendingthrough the shift frame and supported and guided on ithe `rock sh-a'ftibetween the irock arms, fore-*andfaft swinging Vmeans :mounted Y wardlyofthe shiftframe and operable A'from said second rock shaft, a dogrocker ifor the carriage escapem'ent supported from thels'hi'ftfframeiin rear of the universal b'ar and ribbon feeding andvibrating devices, and an'a'ctuator -for thedog rocker on theuniversal-bar-carrying arm opposite that arm from 'which the second-rockshaft'isactuated.

16. In a I-typewriting machine, a main frame, a platen carriage, anup-and-down movable shift' frame supportingthe carriage, atransverserockshaft journalled on1 the main frame vin rearlof `the 'shift frame, iapair of rock 'armsfextending Vforward fromfsaid shaft andfc'onnectedwith' the shift frame for mov- Aing the shift frame -upsan'd-down, shift.key

` operated means forro'cking said shaft, ian

arcuate universalbar forwardof the shiftA frame, key-operated ftypelbarsfor actuating said universal =bar, a Apair olfjtransversely spacedarnis'carrying said Auniversal bar at their-forward endsand'liavinglongitudinally extending' guide slots -at -their rear endsthrough which said rock shaft extends, saidV universalbar-carrying 'armsextending through `the shift frameandsupported and guided lon the rockshaft vbetween the irock arms, fore-and-aft swinging .means mounted onthe main lframe between the Arock 4shaft andruniversal bar and pivotallyconnected with said universal-bar-carrying.arms for- Wardof the rockshaft for supporting and guiding said arms, a ribbon mechanism actuatingmeans mounted on thema-in 'frame fforward of `the shift frame, anoperatingconnection between said actuating means'vand one of theuniversal-bar-carrying arms, and an escapementactuator on the other oneof Asaid universal-bar-carryingarms in reariof the shift frame. Y'

17. In typewriting machine, a Vmain frame, a platen carriage, anupsand-.down `movable 4shift frame supporting the carriage, a transverserock shaft journalled on the main frame in rear ofthe shift frame, apair of Vrockarms extending forwardy from said shaft and connected withthe shift frame 'for movingthe shift vfraifne up-anddown,

*shift fkeyoperated Vmeans forgrccking said shaft, :an arcuate universal:bar forw-ard =of ztlie shift frame,'key.operated type bars foraact'ua'ting sa-idfunivers-a'l bar,4a pairi of transversely spaced zarms carrying said iuniversal bar lat ftheir forward ends and :havingflongitud-inailyextending Iguide slotsy at :their rear v'ends throughwhich saidrock shaft extends, said runiversal-ba-recarrying armsextending 'through the shift frame and supportedand` guided lvon therock shaft'between 'the "rock arms, yfore-and-aft swinging 'meansImounted `,on the main iframe between ythe :rook shaft and universal`bar fand pivotally connected vwith said iuniversal=barcarry1ng armsifor- `wardfof -tlieirock shaftsfor supporting and vf yuiding said-arms,ribbon-mechanismfactuvating' :means ,connected with one: of saidiuniversal-.bar-carrying arms, and ,fan escapement 'mechanism actuatingmeans connected with vthe: other universal-bar-carrying arm.

:18.1In a etypewriting machine, a main frame, a .platen carriage, an:up-and-.dovan Amovableshift frame supporting the carriage, a transverserock shaft journalled `on the main frame 1in rear ofith'e shift frame, a,pair of rockarmsnextending forward `from -said shaft vand `,connectedwith' the 4shift `frame for m'ov-ing lthe `shift iframe up yand down,shift fkeyoperated 'means for rocking lsaid shaft, van `arcuateuniversal bar forward of the shift iframe,:keyeoperated type :bars :for

' actuating saidfuniversal bar, a ,pair iof trans versely spaced armscarrying l*said universal bar at their forward ends and havinglongitudinally extending guide'slots iat theirrear ends :throu gh which.said rock shaftA extends, vsaid luniversalabar-carrying arms extendingthrough Vthe shift frame and supported and ,guided :on Athe rock shaftbetween the `rock 4arms, :forefand-aft: swinging vmeans mounted on themain iframefbetween the rock shaft yand universal bar :and pivotallyvconnected with sai-d yuniversal-'barfcarizying arms. forward of 'therock shaft f0r.'sup.porting and guiding said arms, an iescap'emcntactuator munted fon one of said liunivereal-bar-carry ing armsV at'tlie'real-ofthe shift framaand-.a Vspace#bar-operated.escapementactuatorihaving-a pin-andslot supporting and guiding rconnectionwithsaid fore-andsaft swinging means and lextending through the shift l19.Inra typewriting machine, an varcuate -type-bar-aetuated universal bar,,a pair of i Afore-and-aft extending arms carrying saidandejaft'vibratable iuniversal baroperable by also the type bars, afore-andaft rocking support connected at its forward end with the spacev bar for fore-and-aft vibration thereby and having a fore-and-aftsliding connection with said rocking support adjacent its rear end, saidactuators having a push connection only with the escapement mechanism.

2l. In a typewriting machine, a main frame, a platen cari'iage,-a platenon the car riage, a shift frame for the platen carriage, means forshifting said frame including a rock shaft journalled on the main frame,a key-lever-fulcium support mounted von the main frame, character keylevers fulcrumed on said fulcrum support, type bars operable by the keylevers, a rocker mounted on said 4fulcrum support to vibrate foreand-aftof the machine, a universal bar operable by the type bars, supportingarms spaced apart transversely of the machine carrying said universalbar at their forward ends and having longitudinal guide slot-s at theirrear ends through which said rock shaft extends to support and guidesaid bars, and means pivotally Vconnecting 'said universal-bar-carryingarms with said rocker between the universal bar and said rock shaft. Y

22. In a typewriting machine, a type bar actuated universal bar, apairof fore-and aft swinging arms spacedl apart transversely of the machinein rear of said bar, said bar having a pair of integral forward side armmembers extending rearward therefromv and pivotally held intermediatetheir ends to said swinging arms, a pair Vof rear side arm membersdetachably secured at their forward ends to the rear portions of saidforward side arm members and having longitudinally slotted rear ends,means on the main frame extending through the slotsin said rear side armmembers to cooperate with the swinging arms to guide and support theuniversal bar, the rear member of one side arm being formed with anintegral depending arm for actuating the ribbon mechanism of themachine, and the front member of the other side arm being formed with anintegral tappet eXtending in an up-and-down direction for actuatving theescapement mechanism ofthe machine.

23. In a'typewriting machine, a type bar actuated universal bar, a pairof fore-anden; swinging arms spaced apart transversely of the machine inreary of said bar, said bar having a pair of integral forward side armmembers extending rearward therefrom and pivotally held intermediatetheir ends to said swinging arms, a pair of rear side arm membersdetachably secured at their forward ends to the rear portions of saidforward side arm members, and having longitudinally slotted rear ends,means on the main frame extending through theslots in said rear side armmembers to cooperate with the swinging arms to guide and supporttheuniversal bar, the rear member. of one side arm being formed with anintegral depending arm for actuating the ribbon mechanism of themachine, the

frontmember of the other side arm being formed with an integral tappetextending in an up-and-down direction for actuating the escapementmechanismy of thek machine, and one of said rear side arm 'memberscarrying an integral transversely extending spacer bar abutting theinner face of the other rear side arm member. f

V24. In a typewriting machine, an arcuate type-bar-actuated universalbar, side arms extending rearward from said universal bar, meanssupporting said side arms to vibrate back and foithaiid located to therear of the universal bar, Van escapement actuator carried by one ofsaid side arms, a ribbon mechanism operating arm depending from theother side arm, a rock shaft extending transversely of the inachineunderthe universal bar, a rockV arm depending from said shaft, a link eX-tending rearward from said depending rock l arm and connected with saiddepending ribbon mechanism operating arm, a pair of lipstandingactuators held to said rock shaft to vibrate fore-and-aft at `Opopsiteends of the universal bar, a pair of ribbon spool rotating devicesadjacent opposite sides of the machine operable from said actuators, apair of devices adjacent opposite sides of the machine operable fromsaid actuators to render the rotating device for one spool inenectivewhen the ribbon is exhaustedfrom the other spool, a ribbon vibratingdevice, and an actuator for said device held to said rock shaft adjacentone side of the machine.`

25. ln a typewriting machine, an arcuate type-bar-actuated universalbar, side arms extending rearward from said. universal bar, meanssupporting said side arms to vibrate backv and forth andvlocated totherear of the universal bar, an escapcment actuator Icarried by one ofsaid side arms, a ribbon mechanism operating armdepending from the otherside arm, a rock shaft extending transversely of the machine under theuniversal bar, a rock arm depending from said shaft, a link extendingfrom said depending rock arm and connected with said depending ribbonmechanism yoperating arm, a pair of upstandiiig actuators held to said'rock shaft to vibrate fore-and-aft at opposite ends of the universalbar, a pair of ribbon spool r0- tating ldevices adjacent opposite sidesof the machine operable from said actuators, a pair of devices adjacentopposite sides of 'the 1uachine operable from said actuatorsto renderthe rotating device for one spool ineffective when the ribbon isexhausted from the other spool, a ribbon vibrating device, an

in its rear face in which said universal bar vibrates, supporting armsextending rearward'and downward from the universal bar through saidwall, means in rear of said'f wall supporting said side arms to vibratei endwise, atransverse rock shaft closely un-V derlying said partitionwall, two armsde-l pending respectively fromsaid rock shaft and one of'said side arms, a foreand-aft extendinglink connecting` said twodepending arms, type bars pivoted in the segment andi adapted to movethe universal' bar rearwaidly and downwardly on their printing strokes,key-operated means for actuating the type bars,escapement'meclianism'for the platen carriage located vto the rear ofthe plane of said partition wall, an actuator for the escapeinentcarried by one of said side*y arms in rear of the partition wall, ribbonvibrating means located forwardly of the plane of said partition wall,and an actuator for said ribbon vibrating means held to the rock shaft.

27; In a` typewriting machine, ay platen, a

platen carriage, a main frame having-an up` wardly andl rearwardlyinclined transversepartition wall lthe lower edgeofwhicli is locatedabove the base line of the main frame, an arcuateuniversal bar locatedforward of said wall, a type bar segmentheld to the front face of saidwall having a recess in its rear face in which said universal barvibrates, supporting arms extending rearward anddownward fromythe'unive'rsalbar through said wall, means inrear of said' wallsupporting said side arms tovibrate endwise,

a transverse rock shafty closely un-r said partion wall, two arms`depending respectivelyfrom said rockshaft and one ofI said side arms, afore-and-aft extending link connectingV saidy two depending arms, typebars pivoted in the segment derlying and adapted to' movethe universalbar rearwardlyv andl downwardly on their printing strokes, key-operatedmeans for actuating the type bars, escapement mechanism for the 'platencarriage locatedv to the rea-r ofthe raV pla-ne of said partition wall,anactuator for tlieescapement` carried by One of 'saidside" arms in rearof the partition wall, ribbon vibi-ating mechanism located forwardly ofthe plane of saidpartition wall, an actuator for said ribbon' vibratingmeans held to theroclr shaft, ribbon vfeeding mechanism locate-d forwardof the 'plane of said partition wall, andfin'eans held to said rock`shaft for actuatving said4 ribbon feeding mechanism.

28".' a typewriting machine, a plateina platen carriage, a main framehavingan upwardly and rearwardly inclinedv'transverse partition wallthelower edge of'whicli islocated above the base line ofthe main frame,

an' arcuate universal Ybar located forward of said wall, a typebarseginent, heldv to the front face of-said wall having a recess in itsrear face inwliich said universal bar vibrates, supporting armsextending rearward and downward from the universal bar through said'wall, meansv in rear of saidwall supporting' said` side arms to vibrateendwise, a transverse rock shaft' closely underlying said partitionwall, twoarms depending respectively from said'rock shaft and one ofsaid side arms, a fore-and-aft extending link,

connecting said ,two depen'dingarms, type bars pivoted in theAsegment*,and adaptedv to move the universal bar rearwardly and'downwardly onv their printing strokes, keyopera'ted'means for actuating'the type bars, escaper'nent mechanism for the platenu carriage locatedtothe rearof the plane of' said, partitionwall, an actuator for theescape-n lmentl carried by*r one of'A said side arms in rear of thepartit-ion wall, ribbon. vibrating x mechanism locatedrforwardly of' theplane ofV v said partition/wall, an actuator for sai-d rib;y bonvibrating lmeans held4 to `the rock shaft, a space bar, andanindependent actuator for` -the escapeinent'v mechanismy operable by'said'` lspa'c-e bar 'andi extending` under said" parti'- tion walland'frocl shaft:

29. In aV type'writing machine, a platen, means for case-shifting theplaten including a rock shaft extending transversely of the.vr

machine, an arcuate universal bar, endwi'se movable side arms carryingsaid universalV bar at their forward ends, means for support-V` ing andguiding said: side arms including longitudinalslotsin said arms in whichsaid roclrshaft is engaged, key-operatedtype bars.. "adapted to. movesaid universalbari'earvvard'V lontlieir printing strokes, a segment'A inwhich the type' bars are pivoted, 'a jreturn spring1 forthe' universalbarandcy means for limit! ing the tlirow'of the universal bar includingsaid rock shaft and' said segment.` f

80.ln .a typewriting machine, af platen,` means for case-shifting theplatenincluding a rock shaft l'extending transversely of the machine, anarcuate universal barrliaving rearwardly extending p supporting arms,means for guiding said" arms to move endvvided with a fore-and-aftextending wise including longitudinal slots in said arms through whichsaid shaft extends, keynoperated type bars adapted to engage saiduniversal bar and move it rearward on their printing strokes, and anoverthrow stop for the universal bar carried by one of said side armsand adapted to engage said rock shaft.

31. In a typewriting machine, a platen, carriage, escapement mechanismfor the carriage including a dog rocker mounted to swing about an axisextending transversely of the machine, an arcuate universal bar,keyoperated type bars for actuating the universal bar, a rigidmemberextending rearward from the universal bar having its rear end arrangedto engage and rock the dog rocker, a fore-and-aft swinging supportinglarm for the universal bar mounted on the framework of the machine andpivotally connected with said rigid member, a transverse rock shaftliournalled on the framework of the machine 4forward of said supportingarm, a rock arm held to said shaft to swing fore-andaft of the machine,a space bar connected with said shaft for rocking the shaft, a laterallyprojecting stud on said supporting arm, a second rigid member extendingfore-and-aft of the machine having its rear end arranged to engage androck the ydog rocker and provided with a fore-andaft` extending guideslot through which said stud extends and pivotally connected at itsforward end with said rock arm.

32. In a typewriting machine, a'platen carriage, escapement mechanismfor the carriage including a dog rocker mounted to swing about an axisextending transversely of the machine, an arcuate universal bar,keyoperated type bars for actuating the universal bar, a rigid memberextending rearward from the universal bar having its rear end arrangedto engage and rock the dog rocker, a fore-and-aft swinging'supportingarm for the universal bar mounted on the framework of the machine andpivotally connected with said rigid member, a transverse rock shaftjournalled on the frame work of the machine forward of said supportingarm, a rock arm held to said shaft to swing fore-and-aft of the machine,a space bar connected with said shaft for rocking the shaft, a laterallypro jecting stud on said supporting arm, a sccond rigid member extendingforeand-aft of p the machine having its rear end arranged to Vengage androck the Adog rocker and proguide slot .through which said stud extendsand pivotally connected at its forward end with said rock arm, and afore-and-aft extending return spring for thespace bar and said secondrigid member connected with said member at its rear end and connected atits forward end with the framework of the machine.

33. In a typewriting machine, a platen'carriage, escapement mechanismfor the car,`

riage including a dog rocker mounted to swing about an axis extendingtransversely of the machine, an arcuate universal bar, key-operated typebars for actuating the universal bar, a rigid member extending rearwardfrom the universal bar having itsk rear end arranged to engage and rockthe dog rocker, a foreandeaft lswinging' supporting arm for theuniversal bar mounted on theframework of the machine and pivotallyconnected with said rigid member, a transverse rock shaftfjournalled onthe framework of the machine forward of said supporting arm, a rock armheld to said shaft to swing fore-and-aft of the machine, aspace barconnected with said shaft for rockingtheshaft,alaterallyprojecting studon said supporting arni,asecond rigid member extending fore-and-aft ofthe machine having its rear end arranged to engage and rock the dogrocker and provided with a fore-andaft extending. guide slot throughwhich said stud extends andpivotally connected at its forward end withsaid rock arm, and ribbon vibrating mechanism operable by said universalbar. s

34C. In a typewriting machine, a platen carriage, escapeinent mechanismforv the carriage including a dog rocker mounted to swing about an axisextending transversely of the machine, an arcuate universal bar,keyoperate'dtype bars for actuating the universal bar, a rigid memberextending rearward from the universalbar having its rear end arranged toengage and rock the dog rocker, a fore-and-aft swinging .supporting armfor e the universal bar mounted on the framework of the machine andpivotally connected with saidrigid Vmember, a transverse' rock shaftjournalled on the frame work of the machine Vforward 'of said supportingarm, a rock arm held to said shaft to swing fore-and-aft of the machine,a space bar connected with said shaft Vfor rocking the shaft, alaterally pro-r` jecting stud on said supporting arm, a second rigidmember extending fore-and-aft'of' the machine having its rear endarranged to engage and .rock the dog rocker and provided with afore-and-aft extending guide Aslot through which said stud extends andpivotally connected at its forward end with said rock arm, afore-and-aft extending return lio 'Y spring for the space bar and saidsecond rigid member connected with said member at its rear end andconnected at its forward end with the framework of the machine, and ribbon feeding and vibrating means operable by said universal bar.

35. In a typewriting machine, a platen car-l l `the universal bar havingits rear end an moose?.

ranged to engage and rock the dog rocker, a fore-and-aft swingingsupporting arm fory the universal bar mounted'on the framework shiftframe., a mainframe, type barspivoti.v

of themachine and pivot-ally connectedv with said rigid member, atransverse rock shaft journalled on the framework of the machine forwardof said supporting arm, a rock arm held to said shaft to swingfore-andaft of the machine, a space bar connected with said:

shaft for rocking the shaft, a laterally projecting stud on saidsupporting arm, a second rigid member extending fore-and-aftf of themachine having its rear end arrangedto engage and rock the dog rockerand provided with a fore-and-aft extending guide slot through which saidstud extends and pivotally connected at its; forward end with saidE rockarm, and means for shifting the carriage up and'down to change case,said'dog rocker being mounted to partake of case shift movements of theplaten carriage and having a laterally extending lug, andthe rear endsof said' rigid dog-rocker-actuatmg members having rearwardly facing rearend edges eX- tending parallel-with the path of shift of the carriageand dog rocker and adaptedto engage saiddog rocker` lug in all'casepositions of the carriage. Y

'36. In a typewriting'machine, a platen carriage, escapement mechanismfor the carriage includingv a dog rocker mountedl to swing about an axisextending transversely of the machine, an arcuate universal bar, keysoperated type bars foractuatingtheuniver- 'sal bar, a rigid memberextending rearwardV from the universal bar'having its rear end arrangedto'engage and rock the dog-rocker, a fore-and-aft swinging supportingarm fo-r tlie'universal bar mounted on the framework of the machine-andpivotally connectedw-ith said rigid member, a transverse rock shaftvjournalled on the framework of themachine forward of said supportingarm, a rockarni held to said sliaftto swing fore-and-aft` of themachine, a space bar connectedwith saidn shaft for rocking the shaft, alaterally pro- `ectin f stud on said su ortin arm a second rigid memberextending fore-and-aft of the machine having its'rear end-arranged toengage and rock the dogrocker andprovided with Va fore-and-aft extendingguide slot through which said stud extends and pivotally connected atits forward end withl said rock arm, ribbon mechanism operable by said iuniversal bar, and means for shifting the car- 'riage up and down tochange case, said* dogv rocker being mounted to shift with the car#riage and having an a-butment'located a fixed distance from its pivotengageable by the rear end edges of said two rigid members in all casepositions of the carriage, said end'edges of said members extendingparallel with the path of case shift movement of the carriage. 37. In' athree-quarter strike typewriting machine, a platen, a platen carriage,an obliquely 'shiftable' shiftv frame supporting the carriage,-key-operaedzmea1ns:for shifting the ally mountedon the main-frame tosrtike oni theupper frOnt quarter of` the platen` with? theirpivotsinaplane 4parallelwitli lthe plane .of` movement of' the shiftframe, 'character keys,l connections between@the'character keys: andtype barsL for.' actuating the type bars, ribbon feedingandfvibrating'meanssupport# ed from the shift frame-forwardly. of said=shiftk frame, escapement meansfon the car-V ria'ge locatedentirelyztothe rear of saidtypebars' and their operatingk connectionsand entirely to the rear of said'iribbon feeding'andl vibrating meansandshiftable with the shift,V frame, and type-bar-operated universal-ybar' down in the main frame, a transverse rock shaftjournalled in themain framein rearlofv the shift frame, rock armsconnectings'aid' shaftwith the shift frame, shiftkey-operated=l means for rocking said shaft,azkey-lever full.

crum member mounted on the main frame forward of the shift frame, anarcuate uni versal bar forward'of' the shift frame, side arms carryingsaiduniversalbar at their forfward ends extending through the shiftframe and provided' with *longitudinali` guidel slots" through'whichsaid-'rock shaft extends, a pair p of fore-and-aft swinging supportingvarmsv mounted on said fulcruin member and pivotally connected witlisaidside arms, key levers,`

fulcrumed-at their rear ends on said fulcrum member, afsystemoftypebarspivotedfonthe 'platen on the carriage, escapeiiientl mechanismshiftable with the shift' frame, ribbon feeding and vibratingYmeanslocated forwardly of and shiftable with'the shift frame, w` r anactuatorfr said ribbon feeding and vibrating means mounted lon the mainframe iiol forward of the shift frame and connected with one lof Said'yside arms, and an actuator for the escapement mechanism located in rear'.of'the shift frame and carriedby the, other i 1 one of said side arms.

39. yIn a typewriting machine, amain frame, ashift frame guidedto'move'fup and down in the main frame, a transvei'serock shaftjournalledin the main frame in rear,r 2125' `shaft with the shiftframe,shiftkey-operated5 means for rockingisaid shaft, a key-leverful'-y ofthe shiftv frame, rock arms connecting said crumedmembermounted on the main frame forward of the shiftframe, an rarcuateuniversa-1 bar forwardV of the shift frame, side;

arms carrying said universal bar at their forward ends extending throughthe shift` frame and provided with longitudinal guide slots throughwhich said rock shaft extends, a pair of fore-and-aft swingingsupporting arms mounted on saidfulcrum member and pivotally connectedwith said side arms, key levers fulcrumed at their rear ends on saidfulcrum member, a system'rof type bars pivoted on the main frame forwardof the shift frame and adapted to engage and operate the universal baron their printing strokes, operating conA nections between the keylevers and type bars, a platen carriage on the shift frame, a platen onthe carriage, and escapement, means and ribbon feeding and vibratingmeans all shiftable with the shift frame and operable from saiduniversal bar. f

40. In a. three-quarter strike typewriting machine,'a slotted type barsegment, an arcuate type bar-operated universal bar behind said segment,said segment and universal bar lying in an upwardly and reaiavardlyinclined plane, aplaten above and in rear of `the segment, typel barspivoted in the segyment slots to strike on the upper iront quarter ofthe platen and actuate said universal bar on their printing strokes,key-operated means for actuating the type bars, means in rear'of thesegment supportingthe universal bar to vibrate back and forth in a downwardly and rearwardly inclined path, a transverse rock shaft below` thesegment, a pair of upstanding rock arms held to said shaft betweenwhiehkthe segment and universal bar extend, ribbon feeding mechanismoperable by said upstanding rock arms, ribbon vibrating1 means, anactuator for said vibrating means on said rock shaft, a rock armdepending from said rock shaft, a connection between said rock arin anduniversal bar for rocking the shaft, a carriage for the platen,

and yescapement mechanism for the carriage.

operable from said universal bar.

, 4l. In a typewriting y machine, a main frame, a platen carriage, aplaten on the carriage, a key lever fulcrum support held `to the mainframe, character key levers'pivotally held to said support, type barsoperable by the `key levers, an anchor bar on the main frame, key leverreturn .springs connected .opposite direction and returning the uni-lkwith said anchor bar.

versal bar on the return strokes of the type bars, and ribbon vibratingmechanism operable from said rock shaft.

4:2. In a typewriting machine, a main i. said shaft, a positiveconnection between thev universal bar and one of said rock arms forturning the shaft in one direction on the printing strokes of the typebars, a spring connected with the other rock arm and with said anchorbar for turning the shaft in the opposite direction and returning theuniversal bar on the return strokes of the type bars, and ribbon feedingand reversing mechanism and ribbon vibrating mechanism all operable fromsaid shaft.

48. In a typewriting machine,` a main frame, a platen, a platencarriage, a key lever fulcrum .support on the frame, character keylevers pivotally vheld to said support, type bars operable by the keylevers, an anchor bar on the main frame, key lever return springsconnected with said anchor and the key levers, van arcuate universal baroperf able by thetype bars, a rocking support for the universal barmounted on said key-lever fulcrum support, escapement mechanism operableby said universal bar, a transverse rock yshaft journaled inthe mainframe, a pair of rock arms on said shaft, a positive connection betweenthe universal bar and one of said rock arms for turning the shaft in onedirection on the printing strokes of the type bars, a springconnectedwith the other rock arm and with said anchorbar for turning theshaft in the wopposite direction and returning the universal bar on theree turn strokes of the typebars, ribbon vibrat-Y ing mechanismoperablejfroin said rock shaft, an actuator for the carriage escapementoperable independently of .said universal bar, a

space bar for moving said actuatorV in one direction, and a returnspring for said space bar and actuator connecting the actuator 44:. In atypewriting machine, a rmain frame, a platen, a platen carriage, a keylever rfulcrum support on the main' frame, character key leversfulcru'med on saidsupport, type bars operableby the key levers, ananchor bar on the main frame, key lever re,- turn springs connected withsaid anchor and the key levers, yan arcuate universal bar open able bythe type bars, a rocking support for` l type bars, ribbon vibratingmechanism opera.-

ble from said rock shaft, an actuator for the carriage escapementoperable independently of said universal bar, a space'bar 'for movingsaid lactuator in one direction, aV return spring for said space bar andactuator connecting the actuator with said anchor bar, said actuatorhaving a pin-and-slot supporting andl guiding connection with saidrocking support for the universal bar.

l 4:5. In a typewriting machine, a' main frame having an upwardly andrearwardly inclined transverse partition wall, a type bar segment heldto the front face of said wall, a platen'carriage above and in rear ofthe segment, a platen onA the carriage, a fulcrum member held to therear face of said wall, key levers extending under said wall andfulcrumed on said member, type bars pivoted in Said segment to strike onthe upper front quarter of the platen, operating connections between thekey levers and type bars, a transverse rock shaft, bearings for saidrock shaft held to said wall, an arcuate universal bar operable by thetype bar located forward of said wall, side arms extending rearward anddownward through 'said 'wall lcarrying said universal bar at theirforward ends, a rocking support mounted 0n said fulcrum member and towhich vsaid side arms are pivoted, means engagedwith the side armsadjacent their rear ends and coperating 'with said rocking support toyguide the'universal bar to move rearwardly and downwardly, fore-andaftspaced arms depending' from saidI 'rock' shaft and one ofsaid side arms,a link connectlng said spaced arms, a bichrome ribbon vibrating deviceoperable from said `rock shaftand connected therewith at one side of thetype bars, ribbon spool. rotating devices operable Afrom said rock shaftandconnected therewith at opposite sides of the type bars, andescapement mechanism operablefrom the universal bar.

46. In a typewriting machine, a main frame, a shift Vframe, a platencarriage on lthe shift frame, a platen on the carriage, an arcuateuniversal bar, counterbalancing means for the shift frame including atransverse rock f shaft journalled on the main frame in rear of theuniversal bar, side arms carrying said universal bar at their forwardends and slidablyl guidedl on said'rockshaft'at their rear ends to move'fore-and-aft' of the machine, fore-and-aft swingingV means forsupporting said side arms fulcrume'd on the main frame and pivotallyconnected with said'side arms between the universal bar and rockshaft,keyoperatedtype bars pivoted onthe main frame and adapted to move theuniversal bar rearwardly on their printingstrokes, andcarriage feeding,ribbon feeding, and ribbon vibrating means all'operable from saiduniversal bar.

47.' In a' typewriting pmachine, a platen*` carriage, a platen thereon,a pair of ribbon spools, independent spool rotating devices for saidspools, a'pair of'tappets, automaticreversing mechanism for renderingsaiddevices alternatelyeifective operable' by said tappets', operatingconnections from said tappetsto different ones of said independent'spoolfrotating devices, a third tappet, ribbon vibrat-` ing means operablebysaid third tappet, a fourth tappet, escapement mechanism for thecariage'operable'by said fourth tappet., keyoperated' typebars, andp'auniversal bar actuatedby the type bars and operatively connected with.all'of said tappets for actuating the tappets'at theftypepbar strokes.v

48. In a ty pewriting machine, a'platen carriage; a platen thereon;`ribbon vibrating mechanism, `including bichrome shift" and stencilingmeans; ribbon feeding means; re-v versing mechanism for 'the ribbonfeed; escapement mechanism for thecarriage la uni-kv versalbar'foractuating the carriage escapement; key-operated type barsarranged to actuate said universal bar; a rock shaftyoperable by saiduniversalbar, tappet means on .said rock shaftpfor actuating bothy saidy lIframe, carriage feedingmeans shiftabl'e with the carriage, ribbon:feeding means shiftable means shiftable with the c`arriage,`ribbonvibrating means shift-able' withthe carriage, and separatetype-bar-actuated tappet fdevices on themain frame operatively asso'-vciated respectively with said carriageffeeding, ribbon feed reversing,and ribbon vibra-ting means for actuating the'fsame in all casepositions of the'platen carriage.'

50.'In a typewriting machine,` 'a lmain u lwith the carriage', ribbon.'feed` reversing ,l

frameya ,platen carriage, a platenon the carriage, means forcase-shifting the platen` frame, `al universal baronV the' main frameoperablefby the type bars,.a rockshaft on the main frame operable fromsaid universal-bar,

a pairv of independent ribbon-spool-rotating lao i25- carriage,key-operated type bars on Vthe' mainy

